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Models for road surface roughness

Författare:
Publiceringsår: 2012
Språk: Engelska
Sidor: 725-747
Publikation/Tidskrift/Serie: Vehicle System Dynamics
Volym: 50
Nummer: 5
Dokumenttyp: Artikel
Förlag: Taylor & Francis Ltd

Sammanfattning

This study focuses on the statistical description and analysis of road surface irregularities that are essential for heavy-vehicle fatigue assessment. Three new road profile models are proposed: a homogenous Laplace moving average process, a non-homogenous Laplace process and a hybrid model that combines Gaussian and Laplace modelling. These are compared with the classical homogenous Gaussian process as well as with the non-homogenous Gaussian model that represents the road surface as a homogenous Gaussian process with Motor Industry Research Association spectrum enhanced by randomly placed and shaped irregularities. The five models are fitted to eight measured road surfaces and their accuracy and efficiency are discussed.

Disputation

Nyckelord

  • Mathematics and Statistics
  • road surface irregularity
  • damage variability
  • Laplace moving averages
  • MIRA spectrum

Övriga

Published
Yes
  • ISSN: 0042-3114

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